Machine for turning ribbed collars for umbrellas



(No Model.) 3 Sheets-Sheet 1.

W. E. &-D. E. DOOLITTLE.

MACHINE FOR TURNING RIBBED UOLLARS FOR UMBRELLAS.

No. 420,045 Patented Jan. 28, 1890.

MIX/755555, v v //7VE/7;J/5. f 60140674 I mm @vvM (No Model.)

W. B. & D. E. DGOLITTLE. MACHINE FOR TURNING RIBBED GOLLARS FOR UMBRELLAS.

Patented Jam 28, 1890.

3 Sheets-Sheet 2.

N. PETERS, Plwm-Ukhogrsphan Wnhinxion. n. c.

(No Model.) s sne etksne en 3 W. E. & D. E. DOOLITTLE.

MACHINE FOR TURNING RIBBED GO'LLARS FOR UMBRELLAS.

No. 420,045. Patented Jan. 28,1890.

N. PETERS. pmwuma n her. \V-uhmglum ac UNITED STATES PATENT OFFICE.

WILLIAM E. DOOLITTLE AND DAVID ED\VARD DOOLITTLE, OF NEW BRITAIN, CONNECTICUT.

MACHINE FOR TURNING RIBBED COLLARS FOR UMBRELLAS.v

SPECIFICATION forming part of Letters Patent No. 420,045, dated January 28, 1890.

Application filed June 19, 1889. Serial No. 814,778. (No model.)

To all whom it may concern: A designates the hopper, into which a lot Be it known that we, WILLIAM E. DOOLIT- of blanks are promiscuousl'y placed and acted 'ILE and DAVID EDWARD DOOLITTLE, both upon by the revolving stirrer B, to change citizens of the United States, residing at New their position within the hopper and cause Britain, in the county of Hartford and State them to work down through the groove 11,

of Connecticut, have invented certain new Fig. 3, in the bottom of the hopper to the upand useful Improvements in Machines for per end of the chute 12. The stirrer B is Turning Ribbed Collars for Umbrellas, of mounted upon the shaft C and driven by which the following is a specification. means of a belt running upon the pulley D,

10 Our invention relates to improvements in attached to said shaft. The bottom of the machines for turning ribbed collars of 11mhopper is made of circular form and concenbrellas or other similar-shaped articles; and trio with the shaft C, the front portion 13 bethe chief object of our invention is economy ing closely approached by the ends of the in the production of such articles by the prostirrer-arms, so that the stirrer will sweep I 5 duction of an automatic turning-machine for away the blanks therefrom, while the rear producing the same. portion 14 is removed from the path of the In the accompanying drawings, Figure 1 is stirrer-arms a distance a little greater than a front elevation of our machine; Fig. 2 is a the diameter of one of the blanks, so that a plan view with the chute removed and its blank may lie upon this portion of the hop- 20 supporting-frame shown in horizontal sec .per and not be swept out of its position by tion on the line 00 a; of Fig. 1. Fig. 3 is a the stirrer. transverse vertical section of the same on The groove 11 (see Fig. 3) leads from the line 3 'y of Fig.1. Fig. 4 is a vertical section portion let of the hopper to the upper end of of the chute on a plane at right angles to the the chute 12. The groove 11 is a simple rect- 2 5 lathe-spindle, together with some of the adangular groove in cross-section, so that the jacent parts. Fig. 5 is a side elevation of the blanks will pass through it when they face in upper end of the chute, together with one of either direction, provided, however, that their the blanks indicated in broken lines as passedges are substantially vertical. ing into the chute in its proper position. In the upper part of the chute 12 and upon 30 Fig. 6 is a like view of the same with ablank one sidethereof we form an inward projection indicated by broken lines as having reached 15, immediately above which is a lateral openthe upper end of the chute in an improper ing 16 of a shape and size which will let the position. Fig. 7is a horizontal sectional view blanks pass out when they enter the chute in of the chute on the line 2 z of Fig. 4. Fig. 8 the position illustrated by the broken lines in 35 is a detached view showing the right-hand Fig. 6. WVhen a blank enters the chute in side of the tool-posts and the cam for operthis position, the ribbed portion engages the ating the same, the shafts upon which the projection 15 and the end of the knock-out17, cam and tool-posts are mounted being shown which will prevent the blank from passing in section. Fig. 9 is a side elevation of one down into thechute and arrest it in the po 40 of the flanged collars as turned upon our masition represented in Figsmland 6. The cam chine, and Fig. 10 is an edge View of the same. E on the cam-shaft'F, acting upon the rock- Figs. 4 and 8 are ona scale twice the size of ing arm 18, then permits the spring 19 to that of Figs. 1, 2, and 3; and Figs. 5, 6, 7, 9, force the knock-out 17 obliquely upward and and 10 are on a scale twice that of Figs. 4 forward against the blank and force said 45 and 8. blank out of the chute. If the blank comes Our machine as illustrated is designed for down in a proper position, as indicated in turning and grooving ribbed collars of um- Fig. 5, the screw 20, which partially shapes brellas of the kind known as notches? but the opening 16,will,with the lower side of the it is also applicable for turning and grooving opening, come in contact with the ribbed end 50 umbrella-runners or analogous work. of thecollar-blank and prevent it from fall Ioo ing through the lateral opening,while the projecting end of the knock-out'17 and projection come opposite the smaller portion of the blank and permit-it to fall down into the chute. Thus blank after blank will descend through the chute and be arranged one above the other in an edgewise direction and all facing the same way, while those which from time to time enter the upper end of the chute faced in the opposite direction are ejected by the knock-out. At the lower end of the chute there is a stop 21 for arresting the descent of the bottom blank and two ledges 22 opposite the smaller diameter of the blank, while the larger or ribbed portion of the blank is at one side of said ledges. The left-hand side of the .chute, the side facing the tool-post, is provided with side guides 23, which protect that side of the chute, but which terminate a distance equal to the diameter of one blank above the stop 21. The opposite side of the chute is also open at the lower end. At this point we arrange on the left-hand side of the chute two spring-arms 2i and 25, the arm 25 being stouter and somewhat longer than the arm 24. These serve to retain the lower blank in the chute from working forward accidentally,- while the stouter arm serves also as a knock-off, as hereinafter described.

G designates a lathe-spindle carrying a driving-pulley H and driving-arbor 26, and J designates a companion spindle in alignment therewith and provided with a driving-pulley H and a female center which receives the end of the turning-arbor 26. The axis of the driv ing-arbor is above the stop 21 and coincident wigh the opensides of the chute at its lower en V 27 designates a rock-shaft, to which we attach the tool-posts 28 and 29, hearing, respectively,turning-tools 30 and 31. The position of one of these tool posts with reference to the other may be adjusted by means of the adjusting-screw 32, Fig. 8. A spring 33 is secured by one end to the frame of the machine, and by its opposite end to anarm 34 of the tool-post 28, so as to pull both toolposts backwardly by pulling on the tool-post 28. The tool-post 29 is provided with aspring and a projecting arm 36, having an adjusting-screw 37 as shown in Fig. 8. This spring rests upon the cam K, which acts to throw the tool-post 29 forward, and with it the tool post 2s. The spindle e is a sliding spindle; and is pressed upon at one end by means of the spring 38 for forcing it in one direction. It is also provided with a shoulder 39; against which the upper end of a rock ing arm 40 bears, which rocking arm is acted tipon at every revolution of the cam-shaft by means of the cam L, for forcing said spifldl'e' with a quick motion in the opposite direction.

in o eration b1anks are plac d promis ciiouslywithin the hopper and delivered iiito the chute in the inanner'befor'e described, and

''those which enter the chute faced in the wrong direction are ejected therefrom.- The cam-shaft acts upon the cam L to draw the spindle backwa'rdly until the turning-arbor 26 is drawn to one side of the lower end of the chute, so that the lowermost blank is free to fall until it comes in contact with the stop 21. This brings its central hole substantially inaxial alignment with said arbor. The rocking arm 40 falls off the shoulder of the cam L, and the spring 38 sends the spindle forward, thereby forcing the driving-arbor through the hole in the lowermost blank, and when the blank is firmly seated thereon the continued sliding motion of the spindle and arbor forces the blank against the springs 24 and 25 with such force that they open and let the driving-arbor and the work thereon pass on and bring the work up against the female center or end of the spindle J in proper position opposite the turning-tools. Belts running upon the pulleys H H of the spindles rapidly revolve them and the work. The cam-shaft is also being driven by any suitable means. The cam K presses upon the spring and throws the tool pos't 29 forward, carrying the tool post 28 with it. The spring 35 immediately bears upon the longest concentric face and the face farthest from the shaft, and the tool 3i is brought against the periphery of the work to turn it, the tool be= ing shaped on its end in conformity with the periphery of the desired work. The cam revolves in the direction indicated by the dart in Fig. 8. The spring then bears upon the smaller concentric face of thecanj, when the spring 33 pulls the tool-posts in the opposite direction and brings the tool-30 up againstthe work to turnthe groove in the ribbed portion. The succeeding part of the cam thenthrows the tool-post's halfiway back again and brings them into a position where neither-j tool will act upon the work. The cam L then again acts to withdraw the spindle G. As the spindle thus withdraws the work is caught by the stouter spring 25, thereby knocking off the work from the driving-arbor as said aruorre cedes. WVhile the toolsare in said intermediate position, the rocking arm drops by the shoulder of the cam L, and another piece of work for turning is carried into. the post tion before described and operated upon in ejecting the work thus stopped,s1ibstantially as described, and for the purpose specified;

2. The combination of the chute 12,- provided with projecltions and a lateral opening,

tlie forin of the chute and projections bein such as to arrest the work when faced in one direction and permit it to pasts when faced in all the opposite direction, the knock-out 12', arranged upon the side of the chute which is opposite the lateral opening, and mechanism for reciprocating said knock-out, substanifiialily as described, and for the purpose speci- 3. The combination of the chute 12, provided with side ledges 22 and stop 21, said ledges projecting downwardly below thesides of the chute proper, the springs 24 and 25 by the side of said ledges, and a reciprocating driving-arbor arranged to pass between said ledges, substantially as described, and for the purpose specified.

4. The combination of a chute open upon two sides at its lower end, the reciprocating driving-arbor, and one or more springs 25, arranged to spring away from said arbor when the work is forced out from under the end of the chute and to spring toward said arbor and serve as a knock-out when the driving-arbor recedes, substantially as described, and for the purpose specified.

5. The combination of the tool'post shaft 27,

the swinging tool-posts 28 and 29, mounted thereon, the adj ustingscrew 32, for adjusting their position relatively to each other, and mechanism for operating said tool-posts, substantially as described, and for the purpose specified.

6. The combination of a cam, the tool-post 29, arn1 36, rigidly mounted thereon, the spring 35, resting upon the periphery of said cam, and the adjusting-screw 37, passing through said arm 36, with its end bearing upon said spring, substantially as described, and for the purpose specified.

7. The combination of a reciprocating spindle and driving-arbor, tool-posts 28 and 29, oscillating on a common center, a spring for moving said tool-posts in one direction, and the cam K, for moving them in the opposite direction, substantially as described, and for the purpose specified.

8. The combination of the chute 12, open upon two sides at its lower end, the sliding spindle G, carrying a driving-arbor, the spring 38, for forcing said arbor in one direction, and the cam L and rocking arm 40, for forcing said spindle in the opposite direction, substantially as described, and for the purpose specified.

9. The combination of areciprocating spindle, a chute open upon two sides at its lower end and extending downward below the axis of said spindle, and the stop 21 at the lower end and below the horizontal plane of said axis, substantially as described, and for the purpose specified.

WVILLIAM E. DOOLITTLE. DAVID EDWARD DOOLITTLE. Witnesses:

JAMES SHEPARD, JOHN EDWARDS, Jr. 

